Question

1. you find that 7.36 grams of a compound has decomposed to give 6.93 g of oxygen. the only other element in the compound is hydrogen. find the percent composition of the compound.

Explanation:

Step1: Calculate mass of hydrogen

Mass of compound = \(7.36\) g, mass of oxygen = \(6.93\) g.
Mass of hydrogen \(m_H=7.36 - 6.93=0.43\) g.

Step2: Calculate percent composition of oxygen

Percent composition of oxygen \(=\frac{6.93}{7.36}\times100\%\)
\(=\frac{693}{7.36}\% \approx 94.16\%\)

Step3: Calculate percent composition of hydrogen

Percent composition of hydrogen \(=\frac{0.43}{7.36}\times 100\%\)
\(=\frac{43}{7.36}\% \approx 5.84\%\)

Answer:

The percent composition of oxygen is approximately \(94.16\%\) and the percent composition of hydrogen is approximately \(5.84\%\)